11017_S2 ETX Lithium Battery User’s Manual Copyright© 2017 EarthX, Inc. All rights reserved. The information contained in this document is the property of EarthX, Inc. EarthX reserves the right to make changes to its documents or products without notice. It is the responsibility of each user to ensure that all applications of EarthX’s products are as intended and safe based on conditions anticipated or encountered during use. The EarthX logo is a trademark of EarthX, Inc.
E T X S E R I E S L I T H I U M B A T T E R I E S Table of Contents Overview ............................................................................................... 1 Technology Inside ................................................................................. 1 Battery Cells .................................................................................. 1 ETZ - BMS ..................................................................................... 2 ETX - BMS ........................
E T X S E R I E S L I T H I U M B A T T E R I E S Overview EarthX Lithium batteries are designed as a maintenance free replacement for the 12 volt lead-acid or lithium batteries. To ensure a smooth replacement process, our batteries are similar in dimensions to many OEM motorsport or power sport batteries. Our 12V replacement lithium battery consists of 4 Lithium Iron Phosphate (LiFePO4) cells in series and one or more in parallel with built in electronics to protect the lithium cells.
E T X S E R I E S L I T H I U M B A T T E R I E S is >13.3V). Lead-acid batteries are made with 6 cells in series. Another difference is that lithium cells are a dry cell technology, where the cells are packaged individually. As such, the individual cell’s charge level will diverge with repeated charge/discharge cycles and age. This condition reduces the performance of the battery (reduces capacity), for the battery charge level is only as good as the charge level of the weakest cell.
E T X S E R I E S L I T H I U M B A T T E R I E S and fault indication is included. All components associated with main electronic battery disconnect are redundant. The built-in redundancy ensures that no single point failure results in the battery unintentionally disconnecting. The design aligns with the requirements for a FAA approved lithium battery as per RTCA performance specification DO-347 and DO-160. In the event of a charging system failure where the voltage increases to above 15.
E T X S E R I E S L I T H I U M B A T T E R I E S The table below shows the most common fault conditions and possible causes. LED Light Voltage Slow Flashing (5s on/5s off) Less than 12.8V Slow Flashing (5s on/5s off) Less than 13.2V Possible Cause Battery over-discharged (due to faulty charging system) Weak or failing cell Slow Flashing (5s on/5s off) (> 1 hour time period) 13.2V-14.6V Weak or failing cell Slow Flashing (5s on/5s off) Greater than 15.
E T X S E R I E S L I T H I U M B A T T E R I E S Specifications Model: ETZ5G Voltage Ah (lead-acid equivalent) Ah (1 hour discharge rate) Pulse Crank Amps (PCA) Cold Crank Amps (CCA) Max Continuous Discharge Amps Standard Charge Voltage Recommended Charger/Maintainer Amps Max Charge Amps Life (Charge cycles) Life (Years) Weight Dimensions Environmental Rating (resistance to water intrusion) Operating Temperature Storage Temperature Model: ETZ14C Voltage Ah (lead-acid equivalent) Ah (1 hour discharge r
E T X S E R I E S L I T H I U M B A T T E R I E S Dimensions Environmental Rating (resistance to water intrusion) Operating Temperature Storage Temperature 5.9in x 3.4in x 4.5in (150mmX86mmX115mm) IP 66 (wash down with a high pressure washer) -30 °C to +60 °C -40 °C to +70 °C Model: ETX12A, ETX12B (ETX12B discontinued as of 4-2016, use ETX12A as replacement) Voltage 13.2 V Ah (Lead-acid equivalent) 12 Ah (1 hour discharge rate) 4 (1C rate) Pulse Crank Amps (PCA) 220A (3 sec @ 20 °C, voltage >7.
E T X S E R I E S L I T H I U M B A T T E R I E S Recommended Charger/Maintainer Amps Max Charge Amps Life (Charge cycles) .8 - 8A Life (Years) Weight Dimensions 30A (from vehicle charging system) 4000 cycles @ 1C discharge rate, 25°C (20% depth of discharge) 2000 cycles @10C discharge rate, 25°C (80% depth of discharge) 8 Years 2.2 lb.(1Kg) ETX18B 5.3in x 2.6in x 4.1in (135mmX66mmX105mm) ETX18C 5.9in x 3.4in x 4.5in (150mmX86mmX115mm) ETX18F 5.9in x 3.4in x 3.
E T X S E R I E S L I T H I U M B A T T E R I E S Operating Temperature Storage Temperature Model: ETX36C, D &E Voltage Ah (Lead-acid equivalent) Ah (1 hour discharge rate) Pulse Crank Amps (PCA) Cold Crank Amps (CCA) Max Continuous Discharge Amps Standard Charge Voltage Recommended Charger/Maintainer Amps Max Charge Amps Life (Charge cycles) -30 °C to +60 °C -40 °C to +70 °C 13.2 V 36 12.4 (1C rate) 680A (3 sec @ 20 °C, voltage >7.2V) 320A (modified SAE test, 3 sec@ 0°F, voltage >7.2V) 100A 13.9 - 14.
E T X S E R I E S L I T H I U M B A T T E R I E S Life (Charge cycles) Life (Years) Weight Dimensions Environmental Rating (resistance to water intrusion) Operating Temperature Storage Temperature Model: ETX680/ETX680C Voltage Capacity Capacity vs Temperature Self-Discharge Rate Pulse Crank Amps (PCA) Cold Crank Amps (CCA) Max Continuous Discharge Amps Standard Charge Voltage Recommended Charger/Maintainer Amps Max Charge Amps Life (Charge cycles) 4000 cycles @ 1C discharge rate, 25°C (20% depth of di
E T X S E R I E S L I T H I U M B A T T E R I E S Maximum Altitude 55,000 Ft 14.5 6.2A (.5C) 12.4A (1C) Volts 13.5 18.6A (1.5C) 12.5 11.5 10.5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Amp-hours (Ah) ETX680/680C Discharge Capacity 15 6.2A (.5C) 12.4A (1C) 14 18.6A (1.
E T X S E R I E S L I T H I U M B A T T E R I E S Model: ETX900 / ETX900-VNT Voltage Capacity Capacity vs Temperature Self-Discharge Rate Pulse Crank Amps (PCA) Cold Crank Amps (CCA) Max Continuous Discharge Amps Standard Charge Voltage Recommended Charger/Maintainer Amps Max Charge Amps Life (Charge cycles) Life (Years) Weight Dimensions Environmental Rating (resistance to water intrusion) Operating Temperature Storage Temperature Maximum Altitude 13.2 V 15.
E T X S E R I E S L I T H I U M B A T T E R I E S ETX900 Discharge Capacity 15 6.2A (.39C) 12.4A (.77C) 18.6A (1.16C) Volts 14 13 12 11 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Time (Minutes) ETX900 Discharge Time Model: ETX1200 Voltage Nominal Voltage Capacity Capacity vs Temperature Self-Discharge Rate 13.2 V 12.8 V 24.
E T X S E R I E S L I T H I U M B A T T E R I E S Pulse Crank Amps (PCA) Cold Crank Amps (CCA) 1200A (3 sec @ 20 °C, voltage >7.2V) 600A (modified SAE test, 3 sec@ 0°F, voltage >7.2V) 150A 13.9 - 14.
E T X S E R I E S L I T H I U M B A T T E R I E S 15 6.2A (.25C) Volts 14 12.4A (.5C) 18.6A (.75C) 13 12 11 10 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Time (Minutes) ETX1200 Discharge Time Discharge Versus Temperature We use a similar Cold Cranking Amp test standard as the lead acid battery manufacturers (SAE test performed at 0°F, but 3 second discharge time vs 30 second).
E T X S E R I E S L I T H I U M B A T T E R I E S Self-discharge Rates The self-discharge rate is dependent on temperature. At high temperatures (>25°C), the cell internal resistance decreases so the self-discharge rate increases. See the graph below for self-discharge rates (in % per month) versus temperature.
E T X S E R I E S L I T H I U M B A T T E R I E S ETX12A Discharge Curve (1C Rate) 14 13 V 12 11 25 Deg C 10 9 8 0 1000 2000 3000 4000 mAh The graph below illustrate that usable Ah is nearly the same regardless of the discharge rate, with the voltage remaining above 11.5V for most of the discharge cycle.
E T X S E R I E S L I T H I U M B A T T E R I E S ETX12A Discharge Curve (1C Rate) 14 13 V 12 11 -10 Deg C 10 -30 Deg C 25 Deg C 9 8 0 1000 2000 3000 mAh 17 4000
E T X S E R I E S L I T H I U M B A T T E R I E S Installation Battery Installation Lithium Iron Phosphate batteries are very robust, but if mishandled or misused they can rupture and they can burn. Never disassemble the battery or disable the built-in Battery Management System (BMS). Never jump start a battery from a car battery. Never expose the battery to fire or temperatures above 200° F or 100° C. Never short-circuit the positive and negative terminals of the battery.
E T X S E R I E S L I T H I U M B A T T E R I E S Be careful that the positive battery terminal does not or will not touch any metal parts of the vehicle. Fault Monitoring Installation (ETX Hundred Series) The ETX Hundred Series batteries have a discrete output that can be connected to many aircraft Electronic Flight Instrument System (EFIS) electronics or to a remote mounted LED. The diagrams below detail the required connections for both type installations.
E T X S E R I E S L I T H I U M B A T T E R I E S Fault Monitoring Connection to Dynon Avionics SkyView SV-EMS-220/221 Configure the input as “active low”, “alarm” type. Note; when Dynon power is off the LED inside battery may be dimly lit (less than 120uA, too small to drain the battery). Fault Monitoring Connection to Garmin EFIS Configure the digital input (contact input) as “active low”, “user defined alert” type.
E T X S E R I E S L I T H I U M B A T T E R I E S Fault Monitoring Connection to Grand Rapids Technologies EFIS The following example details how to connect the fault monitoring output to a remote 12V LED. The positive wire (anode, typically the red wire) of the LED should be connected to the electrical bus (positive), and the negative of the LED (cathode, typically the black wire) should be connected to the fault monitor wire (wire out the side of the battery) of the battery.
E T X S E R I E S L I T H I U M B A T T E R I E S Fault Monitoring Connection to 12V LED The table below shows the recommended user alerts based on voltages when in flight. The low charge level is very different from a lead acid battery, for a lithium battery is completely drained at approximately 11.5V. Voltage User Alert >15V High voltage warning (red indicator) <13.5V Alternator off-line alert (yellow indicator) <12.
E T X S E R I E S L I T H I U M B A T T E R I E S Charging Failure to follow these instructions may result in damage to the battery! The ETX Lithium battery is shipped fully charged if ordered directly from EarthX, so try to start the vehicle without charging. If ordering from an authorized dealer, it is recommended you check the voltage first and if it is above 13.3V, continue to install and start vehicle.
E T X S E R I E S L I T H I U M B A T T E R I E S The ETX Lithium battery is compatible with most “modern” lead-acid battery chargers or 4cell LiFePO4 battery chargers. By “modern” we mean a charger that automatically turns off when the battery is fully charged, a charger with a micro-processor, or a charger with multiple mode charging. The “full charge” voltage for the ETX Lithium battery is 13.3V or higher. Some lead-acid battery trickle chargers maintenance mode voltage can be below 13.
E T X S E R I E S L I T H I U M B A T T E R I E S Storage If the vehicle is to be put in storage for an extended period of time, disconnect the battery cable to eliminate drain from the vehicle’s electrical system. A fully charged battery can be put in storage for over a year without charging. Our batteries can be stored at temperatures between -40°C to +70°C. Our batteries have no liquid inside and will not freeze.
E T X S E R I E S L I T H I U M B A T T E R I E S Warranty EarthX, Inc. (Manufacturer) warrants its ETX lithium batteries (hereafter referred to as Battery or Batteries) to be free of defects in material and workmanship for a period of two years. EarthX, Inc. warrants the ETZ lithium batteries and the EarthX Jump Pack to be free of defects in material and workmanship for a period of 1 year. A dealership is not authorized to issue a replacement battery without prior authorization from EarthX, Inc.
E T X S E R I E S L I T H I U M B A T T E R I E S The ETX series lithium battery has built-in over-discharge protection circuitry, which automatically disconnects the battery if the voltage drops below 11.5 volts (98% discharged). When the battery is “disconnected”, the voltage at the battery terminal should be near zero volts if the battery still has a load on it. If the battery is disconnected from the load it will automatically reconnect.
E T X S E R I E S L I T H I U M B A T T E R I E S and protects the charger against reverse polarity hookup. Some chargers need to ‘see’ as much as 9.5 volts before they recognize that they are attached to a battery. Once the charger is hooked up, it’s output voltage should increase, up to 14.6 volts. If your charger does not do this, you may want to contact the charger manufacturer for further troubleshooting tips.
E T X S E R I E S L I T H I U M B A T T E R I E S Regulations The ETX Lithium battery was tested to the following safety regulations as outlined in: • FAA RTCA DO-347, RTCA DO-160, DO-254 • IEC 62133-2 • CE — EU consumer safety, health and environmental regulations. • UN 38.3 These standards set the level of safety required for lithium batteries. The standard addresses normal and abnormal operating conditions. Lithium batteries have special requirements for transportation (shipping) per UN 38.
